Update project authors statements to Dartino

tests/service_tests/performance/java/PerformanceTest.java

-// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 import fletch.*;
 
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 
 import java.util.List;
@@ skipping 142 matching lines @@
 
     start = System.currentTimeMillis();
     for (int i = 0; i < CALL_COUNT; i++) {
       countTreeNodes(generated);
     }
     end = System.currentTimeMillis();
     us = (end - start) * 1000.0 / CALL_COUNT;
     System.out.println("Counting (Java) took " + us + " us.");
   }
 }